Russell is currently Research & Evaluation Manager at User Voice, a charity which helps and researches service users in the criminal justice system. He has been a specialist researcher, lecturer and consultant on drug use for 35 years. From the mid-1980s he helped evaluate the harm reduction approach to drug use in Merseyside, and published the first paper on harm reduction in 1987. From 1998 to 2005, he was Joint Programme Leader of the Dip/MSc in Drug Use & Addiction at Liverpool John Moore’s University, followed by 5 years as Senior Researcher for Manchester Lifeline. Since 2010 he has worked freelance as 3D Research, specialising in research on new psychoactive substances. He has published 3 books (Living with Heroin, Tripology and Magic Mushrooms) and many articles on drug use and drug problems.